P03C4
Generic code
Free on OBD DashX
Want real-world data on P03C4?
See which problems come with P03C4, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P03C4 means
- Cylinder 5 Pressure Variation Low
Possible symptoms
- Check and replace the spark plugs in cylinder 5
- Inspect and clean the fuel injectors for cylinder 5
- Test and replace the ignition coil for cylinder 5
- Perform compression test on cylinder 5
Possible causes
- Faulty spark plug or ignition coil in cylinder 5
- Clogged fuel injector in cylinder 5
- Low compression in cylinder 5
- Vacuum leak in cylinder 5
Possible solutions
- Rough idle or misfire
- Poor acceleration or reduced power
- Engine hesitation or stumbling
- Increased fuel consumption
- Engine running hot
Free on OBD DashX
P03C4 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P03C4 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.